beaedsley



' Nov. 6v, 1923.

Filed Oct. l5. 1922 3 Sheets-Sheet l Nov. e, 1923. 1,472,784

E. O. BEARDSLEY PORTABLE MOLDING MACHINE Filed Oct. 13 1922 3Sheets-Sheet 2 a' 'Qlllllllmlll l Nov. 6, 1923. 1,472,784

E. o. BEARDSLEY PORTABLE MOLDING MACHINE Filed Oct. 13, 1922 5Sheets-Sheet 5 Patented Nov. 6, 1923.

UNITED STATES PATENT OFFICE.

ELMER O. BEARDSLEY, F CHICAGO, ILLINOIS, ASSIGNOR TO THE BEARDSLEY &PIPER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PORTABLE MOLDING MACHINE.

Application filed October 13, 1922.

To all whom t may concern:

Be it known that I, Emrnn O. BnAnnsLnY,

a citizen of the United States, and a resident of Chicago, in the countyof Cook ant. State 6 of Illinois, have invented certain new and usefulImprovements in Portable Molding Machines, of which. the following is afull, clear and exact description.

The invention relates to portable molding machines.

In some foundries, it is not practicable to use a molding machine of thetractor type or those which are mounted on a wheeled carriage andadapted to travel on rails, and in others stationary machines cannot beused to advantage. For example, in making castings of unusual size, suchas printing-press bases and frames, the patterns are placed instationary pits and there is, in some instances, insufficient availablespace for the operation of a tractor, and the reach of a stationarymachine is insufficient to ll such large molds. To meet theseexigencies, it is desirable to have a molding machine 25 which isportable so that it may be transported by a crane and set down in themolding room wherever it is desired or necessary in filling flasks, andone object of the present invention is to provide a molding machinewhich is so adapted.

A further object of the invention is to provide an improved machinewhich is adapted to retain itself rigid wherever it may he Set on themolding room floor, without the necessity of providing means forattaching it in place. Y

A still further object of the invention is to provide means forlevelling the molding machine, so that when it is set upon an irregularfloor it may be easily and quickly set and retained, so that the line ofprojection of the sand will be in the correct direction for fillingfiasks beneath it.

The invention consists in the several novel features hereinafter setforth and more particularly defined by claims at the conclusion hereof.

In the drawings: Fig. l is a perspective of a machine embodying theinvention. Fig. 2 is a side elevation. Fig. 3 is a horizontal section.Fig. 4 is a section on line 4--4 of Fig. 3. Fig. 5 is a section on theline 5--5 of Fig. 4.

The invention is exemplified in a machine Serial No. 594,238.

comprising' a base A, which is adapted to rest on a molding room floorand is of sufficient weight to stationarily support the machine so itcan be operated without attachnient or anchorage to some permanentstrueture. A sand projector is mounted upon the hase and issubstantially of the construction illustrated and described in PatentNo. 1,408,498, dated March 7, 1922, to which reference may be had for amore detailed description. The projector comprises a supporting standard35 which is rigidly secured by bolts 36 to the top of the base A; a jib44 pivoted to the staindard so as to swing horizontally; an arm 45pivoted to the outer end of the jib 44 so as to swing horizontallyrelatively thereto; a sand-projector 46 mounted on the out-er end of arm45 and containing a rotor for projecting wads of sand downwardly at highspeed; an electric motor 47 is also mounted to swing with arm 45 andconnected to drive the rotor; a vibratory conveyor chute 48 containing ariddle mounted to swing with jib- 44; a belt 50 mounted to swing withsaid arm and for feeding sand from said chute to the projector, and acase 49 containing mechanism including an electric motor for vibratingthe chute. This mechanism exemplifies a. sand projector which is carriedby the base and which is movable laterally so as to discharge sand intoall portions of flasks below the projector.

An elevator for sand comprises buckets @l on an endless chain 56 whichis driven by a lower sprocket 57 and passes around an idler sprocket 59.At its upper end, the buckets of this elevator dump sand into a guide 62which directs it into the conveyorchute 48. The upper end of theelevator is supported by a channelled column GO which is secured at itslower end to a bracket 88 which is fixed tothe top of base A. Thesandelevator is driven from an electric motor 68 which is iiXedlymounted on the base, by a pinion 7l on the motor shaft, a gear 7 2meshing with pinion 7l, a pinion 74 fixed to ro tate with gear 72 andmounted on a stud shaft 7 3, and a gear 7 5 meshing with pinion 74 andfixed to a' crossshaft 84 which is mounted in bearings in bracket 38 andto which the driving'sprocket 57 of the sand elevator is secured. A.hopper 54 is secured to bracket 38 to direct sand shovelled into it tothe elevator buckets 61. rlhe base A is cut away, as at a', to form apocket around the lower end of the elevator. rllhe bottom ot this pocketis open, so that when the base is lifted oit the licor, the sand thereinwill drop out. A case 68L encloses motor 08 and a case 691L encloses thegearing for driving the drive-shaft 84 for the elevator. The machine isprovided with a suspension device 64 in the torm ot a loop located asnear as possible to the center of gravity of the machine, whereby theentire machine, including its base, may be suspended from and lifted byan ov rlicad crane with which the 'foundry is usually equipped. llllhenit is desired to move the machine from one iiask or place to another,the hook ot the crane is slipped through the suspension loop 64 and theentire machine will be elevated and transported to the place de sired.To prevent injury to the projector and its asssociated devices, a latch65 is pro vided to slip through one ot the handles 06 on the casing ofthe projector 46 so that the jib 44, arm 45 and projector 46 and thebase carried thereby, will be locked against pivotal movement. Latch 65is pivote/d at 67 t-o a traine 68 which is secured to column 60. lllhenthe projector 4G is swung around to a point adjacent the elevator, thehook 69 on latch 65 will pass through the opening in handle 66 andengage the lower portion thereof and lock the projector and parts towhich it is connected, against lateral displacement. As a result, duringlifting and transporting ot the machine, the parts will be folded intocomparatively small space and 1locked so that they cannot swingoutwardly and be damaged.

Villien a portable machine is used and it is necessary to set it indifferent portions.. ot the foundry floor, it is seldom that the flooris suiiiciently level to cause the machine to be set in a true uprightposition so that the line ot projection ot the sand by the projectorwill be vertical as desired tor etlicient filling of the flasks. To meetthis condition, the baseV i is equipped with levelling mechanism oradjustable ieet, so that when the machine is set where the floor isirregular, it can be properly and quickly levelled. This levellingmechanism comprises a pair of feet 95, one at each front corner of thebase. Each toot is secured to a stem or piston 96 which is slidablymounted in a cylinder 97 which has L head 98 bolted at 94 to base A.Each stem is provided with packing 100 so that when fluid under pressureis forced into the cylinder, the fluid will litt the cylinder and thebase A. The latter is narrowed and provided with al stationary foot asat its :trent end. By forcing tluid into either or both ot thecylinders, the base n'iay be levelled to overcome all irrregularities inthe iioor.

Fluid, such as water or oil tor operating the levelling mechanism, iscontained in chamber 103 of box 101 which is rigidly secured by brackets10Q to the base. A handpump to lorce the liquid from chamber 101 intothe cylinders 9T comprises a cylinder 104, a piston 105 working in saidcylinder, a hand-lever 10G pivoted at 107 to the upper end of the piston104 and tulcrumed at 108 on a link 109 which has 4its lower end pivvotedat 110 to the top ot box 101. Fluid from chamber 103 enters thepump-cylinder on its suction stroke through a check-valve. 111 andpiston 105 torces the fluid thix'uigh a duct 112 to pipe 11?). A.check-valve 114 is included in the pipc 113 to prevent backilow ot thefluid, to the pump. branch pipe 115 connects pipe 1123 with one ot thecylinders 97 and a branch pipe 116 connects pipe 113 with the othercylinder 9T. Y A valve 117 is included in branch 115 and a similar valve118 is included in branch 118` so that the supply ot' liuid underpressure to the cylinders may be separately cont-rolled to permit one tobe i'illed independently ot the other, when necessary in levelling thechine. A return-pipe 119 is connected to supply-pipe 113 and to thetluid chamber 108 in box 101. A valve 120 is included in return-pipe 119and is kept normally closed.

n operation, the pump lever 106 will be operated to torce fluid intoeither or both ot the cylinders 97. It, in order to level the machine,it is necessary to raise one side of the base only, the operator willclose valve 118 and open valve 117 and operate the pump lever until thatcorner has been raised to the desired point. It it is necessary 'toraise the other side of the base where the other cylinder is located,valve 11T vill be closed and valve 118 will be open. The pump will beoperated to 'torce fluid through pipe 118 into said cylinder. lllhenevernecessary, both of the @vlinders may bel raised by opening both of vthevalves 11i' and 118 during the operation et the pump= The corners may bese'A arately lowered by opening one or the other valves 117V or 118 andvalve 190 so that the fluid troni either of the cylinders wil return tochamber 103 in box 101. Springs 120 are applied to each foot 95 toretain them in their raised positions while the machine is suspended inmid air and to prevent the pistons 90 from dropping out ot theircylinders respectively.

ln operation, the projector 96 is operated to till the iiasks beneath itand within reach. The sand for keeping it supplied is shovelled into thehopper 54, from which it is elevated by buckets G1 which discharge thesand through guide 62 into the conveyor-chute 48 on jib 44. Chute 48discharges the sand onto a belt 50 which delivers it to the casing ofproj ector 46. Vhenever it is necessary to move the machine to someother portion ot the molding room, the projector 46 is swung around sothat latch 65 will pass through handle G6 and lock it against horizontalrotation, so that arm 45, j ib 44 and the parts carried thereby will beheld in fixed relation to the base A and supporting standard 60. Next,the suspension loop V64 will be connected to an overhead crane, liftedoff the ground and transported to the desired point of use where it willbe lowered and set upon the fioor. Then., the levelling mechanism willbe operated to bring the machine into proper operative position.

The invention exemplifies a molding machine which is provided with abase which is adapted to maintain itself rigid Wherever it may be set sothat it will properly retain and support the oj erative parts of themolding machine. In practice, it has been found that a base, weighingapproximately three tons is sufficient for this purpose. This provisionmakes it possible to have a machine which is operable while it isstationary and is readily transportable when desired, and in whichsecuring or anchoring devices are dispensed with. plifies a machine ofthis character in which provision is made for quickly levelling themachine after it has been set in position.

The invention is not to be understood as restricted to the details setforth, since these may be modified within the scope of the appendedclaims, Without departing from the spirit and scope of t-he invention.

Having thus described the invention, what I claim as new and desire tosecure by Letters Patent, is:

1. The combination with a molding machine comprising a sand projectorand mechanism for driving the projector, of a portable supporting basefor said machine, adapted to retain itself and the machine therein,stationary wherever it is set on the floor.

2. The combination with a molding inachine comprising a laterallymovable sand projector and mechanism for driving the projector, of aportable supporting base for said machine, adapted to retain itself andthe machine stationary wherever it set on the floor.

3. The combination in a molding machine, of a sand projector, mechanismfor driving the projector, a support, means for movably sustaining theprojector from said support, and a portable supporting base on whichsaid support is secured, adapted to retain itself and the supportstationary wherever it is set on the floor.

4. The combination in a molding machine, of a sand projector, mechanismfor driving the projector, a support, pivoted means for sustaining theprojector from said support so the projector may be moved laterally, anda portable supporting base on which The invention also exemsaid supportis secured, adapted to retain itself and the machine stationary whereverit is set on the floor.

5. The combination in a molding machine, of a sand projector, mechanismfor driving the projector, means for movably supporting the projector, aportable supporting base on which the supporting means is securedadapted to retain itself stationary wherever it is set on the iioor andmeans for delivering sand to the projector movable with said base.

6. The combination in a molding machine, of a sand projector, mechanismfor driving the projector, means for movably supporting the projector, aportable base on which the supporting means is secured, adapted toretain itself stationary wherever it is set on the floor, an elevatorfor sand carried on said base.

7. The combination in a molding machine, of a sand projector, mechanismfor driving the projector, means for movably supporting the projector, aportable base on which the supporting means is secured adapted to retainitself stationary wherever it is set on the floor, an elevator for sandcarried on said base, and driving mechanism for the elevator including amotor supported by the base.

8. The combination of a molding machine comprising a sand projector andmechanism for driving the projector, a portable supporting base for themachine, adapted to retain itself and the machine stationary wherever itis set on the floor, and a suspension-device whereby the machine andbase may be lifted. i

9. The combination with a molding machine comprising a sand projectorand mechanism for driving the projector, a portable supporting base forthe machine adapted to retain itself stationary wherever it is set onthe floor, a supporting column fixed to the base, and suspension devicewhereby the machine may be lifted on the upper end of said column.

10. The combination of a molding machine comprising a driven santiprojector and means to removably support the projector, a portablesupporting base for the machine, adapted to retain itself in stationaryposition wherever it is set on the floor, and means for locking theprojector against movement during transportation.

11. The combination of a molding machine comprising a driven sandprojector and means, to pivotally support the projector so it may beswung laterally, a portable supporting base for the machine, adapted toretain itself stationary wherever it is set on the floor, and means forlocking the projector against movement during transportation.

l2. The combination of a molding machine comprising a sand projector andmechanism for driving said projector, a portable base for the machineadapted to retain itself stationary wherever it is set on the floor andlevelling mechanism for the base.

13. The combination of a molding machine comprising a sand projector andmechanism for driving said projector, a portable supporting base 'forthe machine, adapted to retain itself stationary Wherever it is set onthe Hoor, and levelling mechanism 'lor the base comprising feet andmeans to adjust the base on said feet.

14. The combination ot a molding machine comprising a sand projector andmechanism tor driving said projector, a portable supporting base for themachine, adapted to retain itself stationary Wherever it is set on thefloor, and levelling mechanism comprising devices separately operable byfluid under pressure.

15. The combination oi' a molding machine comprising a sand projectorand mechanism for driving said projector, a portable support-ing basefor the machine, adapted to retain itseltl stationary Wherever it may beset on the tloor, and levelling nuance mechanism comprising i'eet torest on the floor, and devices separately operable by fluid underpressure.

16. The combination of a molding machine comprising a sand projector andmechanism for driving said projector, a portable supporting base for themachine, adapted to retain itself stationary Wherever it is set on thefloor, and levelling devices comprises a pluralty ot pistons andcylinders, a pump, and means for separat-ely controlling the delivery offluid from the pump to said cylinders.

17. The combination `with a molding machine comprising a sand projectorland, mechanism for driving said projector, a portable supporting base'tor the machine adapted to retain itself stationary wherever it is seton the floor, and levelling devices comprising a plurality oit feet, apiston and cylinder for each toot. a pump, and means for separatelycontrolling the delivering of fluid from the pump to said cylinders.

Signed at Chicago, in the county o't Cook and State of Illinois, this25th day o't September, 1922.

ELMER O. BEARDSLEY.

